The nature of unit determination is complex and needs thorough institutional preparation prior to appearing before a labor board hearing. This listing and discussion of positions, which present the greatest difficulty relative to inclusion and/or exclusion from a general faculty bargaining unit, is compiled by persons with broad experience in presentation of unit determination cases before the National Labor Relations Board. Some areas for the college or university employer to explore in framing its unit position are: department chairmen; part-time faculty; graduate and professional schools; other professionals; organization and strategy; and informing the faculty. (Author/KE)